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<!DOCTYPE html>
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<title>JSDoc: Source: jsxc.lib.xmpp.mam.js</title>
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<h1 class="page-title">Source: jsxc.lib.xmpp.mam.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/**
* Implements XEP-0313: Message Archive Management.
*
* @namespace jsxc.xmpp.mam
* @see {@link https://xmpp.org/extensions/xep-0313.html}
*/
jsxc.xmpp.mam = {
conn: null
};
jsxc.xmpp.mam.init = function() {
var self = jsxc.xmpp.mam;
self.conn = jsxc.xmpp.conn;
};
jsxc.xmpp.mam.isEnabled = function() {
var mamOptions = jsxc.options.get('mam') || {};
var features = jsxc.storage.getUserItem('features') || [];
var hasFeatureMam1 = features.indexOf('urn:xmpp:mam:1') >= 0;
var hasFeatureMam2 = features.indexOf('urn:xmpp:mam:2') >= 0;
if (hasFeatureMam1 && !hasFeatureMam2) {
Strophe.addNamespace('MAM', 'urn:xmpp:mam:1');
}
return (hasFeatureMam1 || hasFeatureMam2) && mamOptions.enable;
};
jsxc.xmpp.mam.nextMessages = function(bid) {
var self = jsxc.xmpp.mam;
var buddyData = jsxc.storage.getUserItem('buddy', bid) || {};
var lastArchiveUid = buddyData.lastArchiveUid;
var queryId = self.conn.getUniqueId();
var mamOptions = jsxc.options.get('mam') || {};
var history = jsxc.storage.getUserItem('history', bid) || [];
if (buddyData.archiveExhausted) {
jsxc.debug('No more archived messages.');
return;
}
var queryOptions = {
queryid: queryId,
before: lastArchiveUid || '',
with: bid,
onMessage: function() {
var args = Array.from(arguments);
args.unshift(bid);
self.onMessage.apply(this, args);
return true;
},
onComplete: function() {
var args = Array.from(arguments);
args.unshift(bid);
self.onComplete.apply(this, args);
return true;
}
};
var oldestMessageId = history[history.length - 1];
if (oldestMessageId && !lastArchiveUid) {
var oldestMessage = new jsxc.Message(oldestMessageId);
queryOptions.end = (new Date(oldestMessage.stamp)).toISOString();
}
if (mamOptions.max) {
queryOptions.max = mamOptions.max;
}
self.conn.mam.query(undefined, queryOptions);
};
jsxc.xmpp.mam.onMessage = function(bid, stanza) {
stanza = $(stanza);
var result = stanza.find('result[xmlns="' + Strophe.NS.MAM + '"]');
var queryId = result.attr('queryid');
if (result.length !== 1) {
return;
}
var forwarded = result.find('forwarded[xmlns="' + jsxc.CONST.NS.FORWARD + '"]');
var message = forwarded.find('message');
var messageId = $(message).attr('id');
if (message.length !== 1) {
return;
}
var from = message.attr('from');
var to = message.attr('to');
if (jsxc.jidToBid(from) !== bid && jsxc.jidToBid(to) !== bid) {
return;
}
var delay = forwarded.find('delay[xmlns="urn:xmpp:delay"]');
var stamp = (delay.length > 0) ? new Date(delay.attr('stamp')) : new Date();
stamp = stamp.getTime();
var body = $(message).find('body:first').text();
if (!body || body.match(/\?OTR/i)) {
return true;
}
var direction = (jsxc.jidToBid(to) === bid) ? jsxc.Message.OUT : jsxc.Message.IN;
var win = jsxc.gui.window.get(bid);
var textarea = win.find('.jsxc_textarea');
if (textarea.find('[id="' + messageId + '"]').length === 0) {
var pseudoChatElement = $('<div>');
pseudoChatElement.attr('id', messageId.replace(/:/g, '-'));
pseudoChatElement.attr('data-queryId', queryId);
var lastMessage = textarea.find('[data-queryId="' + queryId + '"]').last();
var history = jsxc.storage.getUserItem('history', bid) || [];
if (history.indexOf(messageId) < 0) {
if (lastMessage.length === 0) {
textarea.prepend(pseudoChatElement);
history.push(messageId);
} else {
lastMessage.after(pseudoChatElement);
history.splice(history.indexOf(lastMessage.attr('id').replace(/-/g, ':')), 0, messageId);
}
}
jsxc.storage.setUserItem('history', bid, history);
}
jsxc.gui.window.postMessage({
_uid: messageId,
bid: bid,
direction: direction,
msg: body,
encrypted: false,
forwarded: true,
stamp: stamp
});
};
jsxc.xmpp.mam.onComplete = function(bid, stanza) {
stanza = $(stanza);
var fin = stanza.find('fin[xmlns="' + Strophe.NS.MAM + '"]');
var buddyData = jsxc.storage.getUserItem('buddy', bid) || {};
var win = jsxc.gui.window.get(bid);
buddyData.archiveExhausted = fin.attr('complete') === 'true';
buddyData.lastArchiveUid = fin.find('first').text();
if (buddyData.archiveExhausted) {
win.find('.jsxc_fade').removeClass('jsxc_mam-enable');
}
jsxc.storage.setUserItem('buddy', bid, buddyData);
};
jsxc.xmpp.mam.initWindow = function(ev, win) {
var self = jsxc.xmpp.mam;
if (!jsxc.xmpp.conn && jsxc.master) {
$(document).one('attached.jsxc', function() {
self.initWindow(null, win);
});
return;
}
if (!jsxc.master) {
return;
}
$(document).on('features.jsxc', function() {
jsxc.xmpp.mam.addLoadButton(win);
});
var features = jsxc.storage.getUserItem('features');
if (features !== null) {
// features.jsxc was already fired
jsxc.xmpp.mam.addLoadButton(win);
}
};
jsxc.xmpp.mam.addLoadButton = function(win) {
if (!jsxc.xmpp.mam.isEnabled()) {
return;
}
var classNameShow = 'jsxc_show';
var classNameMamEnable = 'jsxc_mam-enable';
var bid = win.attr('data-bid');
var element = $('<div>');
element.addClass('jsxc_mam-load-more');
element.appendTo(win.find('.slimScrollDiv'));
element.click(function() {
jsxc.xmpp.mam.nextMessages(bid);
});
element.text($.t('Load_older_messages'));
win.find('.jsxc_textarea').scroll(function() {
var buddyData = jsxc.storage.getUserItem('buddy', bid) || {};
if (this.scrollTop < 42 && !buddyData.archiveExhausted) {
element.addClass(classNameShow);
} else {
element.removeClass(classNameShow);
}
if (!buddyData.archiveExhausted) {
win.find('.jsxc_fade').addClass(classNameMamEnable);
}
});
win.find('.jsxc_textarea').scroll();
};
$(document).on('attached.jsxc', jsxc.xmpp.mam.init);
$(document).on('init.window.jsxc', jsxc.xmpp.mam.initWindow);
</code></pre>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="jsxc.Message.html">Message</a></li></ul><h3>Namespaces</h3><ul><li><a href="jsxc.html">jsxc</a></li><li><a href="jsxc.fileTransfer.html">fileTransfer</a></li><li><a href="jsxc.gui.html">gui</a></li><li><a href="jsxc.gui.dialog.html">dialog</a></li><li><a href="jsxc.gui.queryActions.html">queryActions</a></li><li><a href="jsxc.gui.roster.html">roster</a></li><li><a href="jsxc.gui.window.html">window</a></li><li><a href="jsxc.muc.html">muc</a></li><li><a href="jsxc.notification.html">notification</a></li><li><a href="jsxc.options.html">options</a></li><li><a href="jsxc.otr.html">otr</a></li><li><a href="jsxc.storage.html">storage</a></li><li><a href="jsxc.tab.html">tab</a></li><li><a href="jsxc.webrtc.html">webrtc</a></li><li><a href="jsxc.xmpp.html">xmpp</a></li><li><a href="jsxc.xmpp.bookmarks.html">bookmarks</a></li><li><a href="jsxc.xmpp.carbons.html">carbons</a></li><li><a href="jsxc.xmpp.chatState.html">chatState</a></li><li><a href="jsxc.xmpp.httpUpload.html">httpUpload</a></li><li><a href="jsxc.xmpp.mam.html">mam</a></li></ul><h3><a href="global.html">Global</a></h3>
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